CN203272135U - Rolling type rotor (piston) type compressor - Google Patents
Rolling type rotor (piston) type compressor Download PDFInfo
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- CN203272135U CN203272135U CN 201320285860 CN201320285860U CN203272135U CN 203272135 U CN203272135 U CN 203272135U CN 201320285860 CN201320285860 CN 201320285860 CN 201320285860 U CN201320285860 U CN 201320285860U CN 203272135 U CN203272135 U CN 203272135U
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Abstract
The utility model discloses a rolling type rotor (piston) type compressor. The rolling type rotor (piston) type compressor comprises a motor, a crankshaft and a compression assembly arranged in a shell, the compression assembly comprises a cylinder, a rolling rotor arranged in the cylinder, a valve plate and a valve plate spring; the spindle of the crankshaft is in transmission connection with the motor rotor, an eccentric wheel of the crankshaft is connected with the rolling rotor therein, one end of the valve plate is connected with the rolling rotor, and the other end is connected with the valve plate spring, the rolling rotor and the valve plate are in compression moulding by using the ceramic; furthermore, the surface smoothness Rz of the rolling rotor made of ceramic is not more than 0.8 microns, Ra is not more than 0.1 micron; the surface smoothness Rz of the valve plate is not more than 1.6 microns, and Ra is not more than 0.2 micron. By adopting the compressor disclosed by the utility model, the gaps among the compression assemblies are small, the assembly is more wearable, the compression efficiency is higher, the compression assembly is small in thermal deformation, the high-temperature carbonization in working is avoided, the assembly thermal deformation is avoided, and the carbonizing layer is prevented from wearing and falling to block the machine, the service life is longer, and the energy conservation is realized.
Description
Technical field
The utility model relates to a kind of compressor, relates in particular to a kind of rolling rotor (piston) formula compressor.
Background technique
Present rolling type compressor, claim again rolling piston compressor, its compression assembly is substantially all to adopt metal ceramic, because the machinability of metalwork is good, surface finishment is easily accomplished Rz≤0.8 μ m, and Ra≤0.1 μ m is for wear resistance and the rigidity of improving metalwork, substantially all be that metallic material is carried out modification, but these are all only for the change on metalwork.Yet, the characteristic of metallic material, as large in expansion coefficient, thermal distortion, hardness is low, not wear-resisting, density is large etc., is difficult to be resolved by modification, and common metal material Vickers hardness is 380-450, the general 450-550 of the metal hardness of modification, therefore, the gap of compression assembly all can be reserved very greatly in when design, prevents component heat distortion card machine.During in addition due to compressor operating, the heat that the heat of assembly friction and compressed refrigerant produce makes compressor compresses district operating temperature very high, easily makes compression of metals component wear, carbonization, generation clearance leakage, compression efficiency is low or the problems such as the residue card machine causes that compressor burns occur.
The model utility content
The utility model embodiment technical problem to be solved is, provides a kind of can efficient high and can better avoid rolling rotor (piston) the formula compressor of wearing clearance leakage, carbonization and distortion card machine.
In order to solve the problems of the technologies described above, technical solution adopted in the utility model is:
a kind of rolling rotor (piston) formula compressor, comprise housing and be arranged on the interior motor of housing, bent axle and compression assembly, described motor comprises rotor and motor stator, described bent axle comprises at the main shaft at two ends and countershaft and the eccentric wheel between main shaft and countershaft, described compression assembly comprises cylinder, be positioned at the rolling rotor of cylinder, be positioned at valve block and the valve block spring of the valve block groove of cylinder, the main shaft of the corresponding described crankshaft two end in the two ends of described cylinder and countershaft are provided with for the main bearing and the supplementary bearing that support bent axle, described main shaft and described rotor are in transmission connection, described eccentric wheel is positioned at described rolling rotor and joins with described rolling rotor, described valve block one end and described rolling rotor join, the other end is connected in described valve block spring, described valve block spring is positioned at the inner end of valve block groove, described rolling rotor and valve block adopt pottery compressing.
As improvement of the technical scheme, the rolling rotor surface finishment that described pottery is made reaches Rz≤0.8 μ m, Ra≤0.1 μ m; The valve block surface finishment reaches Rz≤1.6 μ m, Ra≤0.2 μ m.
As improvement of the technical scheme, described rolling rotor is less than 0.02mm with gap with the cylinder wall surface of its applying.
As improvement of the technical scheme, the gap of described valve block and valve block groove is less than 0.03mm.
As the improvement of a kind of rolling rotor of the utility model (piston) formula Compressor Technology scheme, described rolling rotor and valve block adopt aluminium oxide ceramics compressing.。
Another kind as a kind of rolling rotor of the utility model (piston) formula Compressor Technology scheme improves, and described rolling rotor and valve block adopt silicon carbide ceramics compressing.
As another improvement of a kind of rolling rotor of the utility model (piston) formula Compressor Technology scheme, described rolling rotor and valve block adopt silicon nitride ceramics compressing.
implement the utility model embodiment, has following beneficial effect: the utility model rolling rotor (piston) formula compressor embodiment, its compression assembly valve block and rolling rotor are compressing by pottery, the ceramic valve plate of described employing and ceramic rolling rotor, has thermal expansion coefficient little, thermal distortion is little, hardness is high, wear-resistant, density is little, the performance that selflubricating etc. are excellent, and make its valve block and the gap of valve block groove in when design, the gap of rolling rotor and cylinder reduces greatly, improved compression efficiency, and the gap also is not easy to occur wearing and tearing when reducing, carbonization, the problems such as thermal distortion card machine, in addition, the density of stupalith is very little, adopts pottery to make roller and valve block, can greatly reduce the weight of compression assembly, reduces himself power consumption, raises the efficiency, and makes its energy-saving efficiency higher.
Description of drawings
Fig. 1 is a kind of rolling rotor of the utility model (piston) formula compressor embodiment's sectional structure schematic diagram;
Fig. 2 is that middle A-A embodiment illustrated in fig. 1 is to partial sectional view;
Fig. 3 is the structural representation of rolling rotor product in a kind of rolling rotor of the utility model (piston) formula compressor embodiment;
Fig. 4 is the structural representation of a kind of rolling rotor of the utility model (piston) formula compressor embodiment middle valve plate product;
Fig. 5 is little grinding schematic diagram.
Embodiment
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing.
Rolling rotor type compressor claims again rolling piston compressor or fixing slide vane compressor, is a kind of pattern of rotary compressor.Its principle is to utilize the rotation of an eccentric circle tubular rotor in cylinder to change the swept volume of cylinder, thereby realizes air-breathing, compression and the exhaust of gas, thereby also belongs to positive displacement compressor.
as Fig. 1, shown in Figure 2, a kind of rolling rotor of the utility model (piston) formula compressor embodiment, it comprises housing 1 and is arranged on the interior motor of housing 1, bent axle 4 and compression assembly, described motor 1 comprises rotor 2 and motor stator 3, described bent axle 4 comprises at the main shaft 41 at two ends and countershaft 42 and the eccentric wheel between main shaft and countershaft 43, described compression assembly comprises cylinder 5, the rolling rotor 7(that is positioned at cylinder 5 also claims rolling piston), be positioned at valve block 8 and the valve block spring 81 of the valve block groove of cylinder 5, main shaft 41 and the countershaft 42 at corresponding described bent axle 4 two ends, the two ends of described cylinder 1 are provided with for the main bearing 61 and the supplementary bearing 62 that support bent axle, described main shaft 41 is in transmission connection with described rotor 2, described eccentric wheel 43 is positioned at described rolling rotor 7 and joins with described rolling rotor 7, described valve block 8 one ends and described rolling rotor 7 join, the other end is connected in described valve block spring 81, described valve block spring 81 is positioned at the inner end of valve block groove.As shown in Figure 2, rolling rotor 7 rolls along cylinder 5 inwalls, form a meniscate active chamber with cylinder, valve block 8(also claims slide plate or slide damper) lean on the active force of spring to make its end and rotor close contact, the crescent shape active chamber is divided into compression chamber 12a and air aspiration cavity 12b two-part, and valve block 8 is reciprocating along the valve block conduit with the rolling of rolling rotor 7.The cylinder two ends also are provided with end cap, itself and cylinder 5 inwalls, rolling rotor 7 outer walls, point of contact, valve block 8 consist of the volume of cylinder of sealing, during compressor operating, rotor 3 band dynamic crankshafts 4 rotate, the rotation of bent axle 4 drives rolling rotor 7 and rolls at cylinder 5 internal faces, and the volume of cylinder size changes with the rolling rotor corner, and in volume, the pressure of gas changes with the size of element volume, thereby complete the working procedure of compressor, realize compression and exhaust to entering the refrigeration agent in cylinder block.Described rolling rotor 7 and valve block 8 adopts pottery compressing, and further, reaches Rz≤0.8 μ m, Ra≤0.1 μ m by the surface finishment of the compressing rolling rotor 7 of pottery; The surface finishment of valve block 8 reaches Rz≤1.6 μ m, Ra≤0.2 μ m, thereby satisfy well the job requirement of compressor, the surface finishment of its middle valve plate require not as rolling rotor high.
The utility model rolling rotor (piston) formula compressor embodiment, its compression assembly valve block and rolling rotor are compressing by pottery, the ceramic valve plate of described employing and ceramic rolling rotor, has thermal expansion coefficient little, the excellent performances such as thermal distortion is little, hardness is high, wear-resistant, density is little, selflubricating, and make its when design, the gap of the gap of valve block and valve block groove, rolling rotor and cylinder reduces greatly, improved compression efficiency, and the gap can not produce the problems such as easy appearance wearing and tearing, carbonization, thermal distortion card machine when reducing yet; In addition, the density of stupalith is very little, adopts pottery to make roller and valve block, can greatly reduce the weight of compression assembly, reduces himself power consumption, raises the efficiency, and its energy-saving efficiency of energy is higher.And the surface finishment by the compressing rolling rotor 7 of pottery and valve block 8 can meet the requirement that it is used for rolling rotor (piston) formula compressor.
Further, valve block 8 is less than 0.03mm with the gap of valve block groove.
Further, rolling rotor 7 is less than 0.02mm with wall gap with the cylinder 5 of its applying.
The rolling rotor that existing metallic material is made (piston) formula compressor, gap between its rolling rotor and cylinder, and the gap between valve block and valve block groove, if design is too small, wearing and tearing, carbonization or valve metal film easily appear because the stuck valve block groove of thermal distortion causes the problems such as card machine fault, therefore the gap of its rolling rotor and cylinder wall surface generally is designed to 0.06 ∽ 0.03mm, and the gap of valve block and valve block groove generally is designed to 0.1 ∽ 0.05mm; And the technological scheme of employing the utility model technology, when design, its gap can dwindle greatly, even dwindles half.
Compared to existing rolling rotor (piston) formula compressor, in the utility model embodiment, the gap of rolling rotor and cylinder, the gap of valve block and valve block groove reduces greatly, improved compression efficiency, and subtracted the closely spaced while and also can't produce the problems such as easy appearance wearing and tearing, carbonization, thermal distortion card machine.
In the last few years, along with miniaturization and the frequency conversion of using compressor in refrigeration system and air-conditioning system, compressor was harsher to the requirement of the wear resistance of compression assembly and rigidity.Particularly along with the development of frequency converting air conditioner, both required assembly at High Rotation Speed, in compression refrigerant gas, each compression assembly can keep good rigidity, assembly distortion (being mainly the valve block distortion) do not occur, stuck main frame; Require again to have good wear resistance, the wearing and tearing of valve block and rolling rotor do not occur, clearance leakage occurs, cause the low problem of compression efficiency; Require simultaneously assembly quality light, reduce the power consumption of assembly self, make equipment more energy-conservation.Therefore compression assembly, especially valve block and the rolling rotor of compressor are had higher requirement.it is little that stupalith has a thermal expansion coefficient, thermal distortion is little, hardness is high, wear-resistant, density is little, the performance that selflubricating etc. are excellent, but it is good to remove oxidation zircon ceramic machinability, outside the surface finishment height, the Other Engineering pottery is difficult to be worked into very high degree of finish, yet zirconia ceramics easily is subjected to heat ageing, be not suitable for the Environmental Conditions of compressor, therefore up to the present market does not have ceramic component to be applied on air condition compressor, the utility model is exactly for this shortcoming, by the modified ceramic material, the innovation process for machining, make ceramic valve plate and ceramic rolling rotor successful Application to rolling rotor (piston) formula compressor, and the structure of rolling rotor (piston) formula compressor is optimized, make the efficient of air condition compressor higher, life-span is longer, more energy-conservation.
Preferably, rolling rotor 7 and valve block 8 adopt aluminium oxide ceramics compressing, and aluminium oxide purity is preferably higher than 95%.In carrying out the compressing manufacture process of rolling rotor 7 and valve block 8, more than one in ceramic powder in interpolation modifier Mg, Ti, Ca and carbon fiber, by high temperature sintering and control the ceramic crystal size, adopt afterwards machining mode, make ceramic rolling rotor surface finishment reach Rz≤0.8 μ m, Ra≤0.1 μ m; The ceramic valve plate surface finishment reaches Rz≤1.6 μ m, Ra≤0.2 μ m.
concrete, the modifier that adds in the aluminium oxide ceramics powder mixes through ball milling, the modifier that adds can be above-mentioned four kinds all to be added, and it is Mg 0.2-0.8% that addition separately accounts for total mass percent, Ti 0.08-0.3%, Ca 0.5-1.5%, carbon fiber 0.05-0.5% or wherein certain of interpolation are several, as Mg 0.8-2.0%, Ti 0.08-0.3%, Ca 0.5-1.5% or Mg 0.2-0.8%, Ti 0.08-0.3%, carbon fiber 0.05-0.5%, perhaps Mg 0.5-1.3%, carbon fiber 0.05-0.5% etc., can also other modes.
When compressing rolling rotor and valve block, ceramic valve plate and rolling rotor base substrate are through dry-pressing formed, then process is not less than the pressure isostatic compaction of 180MPa.
Aluminium oxide ceramics base substrate high temperature sintering in air furnace after moulding, sintering temperature is not less than 1550 ℃, and crystallite dimension is no more than 10 μ m.
For the aluminium oxide ceramics after sintering, adopt little Grinding Technology to carry out machining to it, little frotton diameter d s≤0.01mm, little frotton rotating speed ws 〉=30000rpm.Fig. 5 is little grinding schematic diagram, and wherein 100 is little frotton, and 101 are the grinding track, and 102 is the product that is ground.
Further, in machining process, product adopts iced mode to be fixed on lathe, thereby can prevent that product processing heating from producing stress, causes influence of crust deformation morpheme dimensional accuracy.
Preferably, rolling rotor 7 and valve block 8 also can adopt silicon carbide ceramics.Equally, in carrying out the compressing manufacture process of rolling rotor 7 and valve block 8, more than one in ceramic powder in interpolation modifier Mg, Ti, Ca and carbon fiber, by high temperature sintering and control the ceramic crystal size, adopt afterwards machining mode, make ceramic rolling rotor surface finishment reach Rz≤0.8 μ m, Ra≤0.1 μ m; The ceramic valve plate surface finishment reaches Rz≤1.6 μ m, Ra≤0.2 μ m.
concrete, the modifier that adds in the silicon carbide ceramics powder mixes through ball milling, the modifier that adds can be above-mentioned four kinds all to be added, and it is Mg 0.2-0.8% that addition separately accounts for total mass percent, Ti 0.08-0.3%, Ca 0.5-1.5%, carbon fiber 0.05-0.5% or wherein certain of interpolation are several, as Mg 0.8-2.0%, Ti 0.08-0.3%, Ca 0.5-1.5% or Mg 0.2-0.8%, Ti 0.08-0.3%, carbon fiber 0.05-0.5%, perhaps Mg 0.5-1.3%, carbon fiber 0.05-0.5% etc., can also other modes.
When compressing rolling rotor and valve block, ceramic valve plate and rolling rotor base substrate are through dry-pressing formed, then process is not less than the pressure isostatic compaction of 180MPa.
Silicon carbide ceramic body after moulding adopts atmosphere sintering or vacuum sintering through high temperature sintering, and temperature is not less than 1400 ℃, and crystallite dimension is no more than 8 μ m.
For the silicon carbide ceramics after sintering, adopt the superhigh speed grinding processing technique to carry out machining, grinding speed surpasses 300m/s, and the processing grinding speed of rolling rotor reaches 500m/s.In machining process, product adopts iced mode to be fixed on lathe, thereby can prevent that product processing heating from producing stress, causes influence of crust deformation morpheme dimensional accuracy.
Preferably, rolling rotor 7 and valve block 8 can also adopt silicon nitride ceramics.Equally, in carrying out the compressing manufacture process of rolling rotor 7 and valve block 8, more than one in ceramic powder in interpolation modifier Mg, Ti, Ca and carbon fiber, by high temperature sintering and control the ceramic crystal size, adopt afterwards machining mode, make ceramic rolling rotor surface finishment reach Rz≤0.8 μ m, Ra≤0.1 μ m; The ceramic valve plate surface finishment reaches Rz≤1.6 μ m, Ra≤0.2 μ m.
concrete, the modifier that adds in the silicon carbide ceramics powder mixes through ball milling, the modifier that adds can be above-mentioned four kinds all to be added, and it is Mg 0.2-0.8% that addition separately accounts for total mass percent, Ti 0.08-0.3%, Ca 0.5-1.5%, carbon fiber 0.05-0.5% or wherein certain of interpolation are several, as Mg 0.8-2.0%, Ti 0.08-0.3%, Ca 0.5-1.5% or Mg 0.2-0.8%, Ti 0.08-0.3%, carbon fiber 0.05-0.5%, perhaps Mg 0.5-1.3%, carbon fiber 0.05-0.5% etc., can also other modes.
When compressing rolling rotor and valve block, ceramic valve plate and rolling rotor base substrate are through dry-pressing formed, then process is not less than the pressure isostatic compaction of 180MPa.
Silicon nitride ceramics base substrate after moulding adopts the nitrogen atmosphere sintering through high temperature sintering, and sintering temperature is not less than 1600 ℃, and crystallite dimension is no more than 8 μ m.
For the silicon nitride ceramics after sintering, adopt the superhigh speed grinding processing technique to carry out machining, grinding speed surpasses 300m/s, and the processing grinding speed of rolling rotor reaches 500m/s.In machining process, product adopts iced mode to be fixed on lathe, thereby can prevent that product processing heating from producing stress, causes influence of crust deformation morpheme dimensional accuracy.
By above-mentioned three kinds of modes, with aluminium oxide ceramics or silicon carbide ceramics or silicon nitride ceramics, product size tolerance after its processing and form and position tolerance are lower than 0.001mm, rolling rotor surface finishment Rz≤0.8 μ m, valve block Rz≤1.6 μ m(see Fig. 3, Fig. 4, and Fig. 3 is the structural representation of rolling rotor product; Fig. 4 is the structural representation of valve block product), reach the needed surface finishment requirement of rolling rotor and valve block.
the utility model rolling rotor (piston) formula compressor embodiment, its compression assembly valve block and rolling rotor adopt pottery compressing, and by using modifier to carry out modification to stupalith itself, the innovation process for machining, making at rolling rotor is successfully to use ceramic valve plate and ceramic rolling rotor on compressor, the ceramic valve plate of described employing and ceramic rolling rotor, has thermal expansion coefficient little, thermal distortion is little, hardness is high, wear-resistant, density is little, the performance that selflubricating etc. are excellent, and make its valve block and the gap of valve block groove in when design, the gap of rolling rotor and cylinder uses the gap of metalwork greatly to dwindle, even dwindle half, greatly improved compression efficiency, and the gap is not easy to occur wearing and tearing when reducing, carbonization, the problems such as thermal distortion card machine,
In addition, the superpower hardness of stupalith makes valve block and rolling rotor be not easy wearing and tearing, and the Vickers hardness of aluminium oxide ceramics can get at 1800, and the hardness of metallic material is generally with regard to 380-550.And the hot temperature of stupalith excellence, make rotor and valve block the problem of carbonization can not occur because temperature is high at work, and metallic material is easy to occur to wear and tear, the problem of carbonization, causes rolling rotor and cylinder stuck, compressor failure occurs;
Again, the density of stupalith is very little, and aluminium oxide ceramics is 3.8g/cm
3, silicon nitride ceramics 3.2g/cm
3, and the density of metal ceramic is generally all greater than 7.8 g/cm
3, adopt pottery to make roller and valve block, can greatly reduce the weight of compression assembly, reduce himself power consumption, to raise the efficiency, its energy-saving efficiency of energy is higher.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (7)
1. a rolling rotor (piston) formula compressor, comprise housing and be arranged on the interior motor of housing, bent axle and compression assembly, it is characterized in that: described motor comprises rotor and motor stator, described bent axle comprises at the main shaft at two ends and countershaft and the eccentric wheel between main shaft and countershaft, described compression assembly comprises cylinder, be positioned at the rolling rotor of cylinder, be positioned at valve block and the valve block spring of the valve block groove of cylinder, the main shaft of the corresponding described crankshaft two end in the two ends of described cylinder and countershaft are provided with for the main bearing and the supplementary bearing that support bent axle, described main shaft and described rotor are in transmission connection, described eccentric wheel is positioned at described rolling rotor and joins with described rolling rotor, described valve block one end and described rolling rotor join, the other end is connected in described valve block spring, described valve block spring is positioned at the inner end of valve block groove, described rolling rotor and valve block adopt pottery compressing.
2. rolling rotor as claimed in claim 1 (piston) formula compressor, it is characterized in that: the rolling rotor surface finishment that described pottery is made reaches Rz≤0.8 μ m, Ra≤0.1 μ m; The valve block surface finishment reaches Rz≤1.6 μ m, Ra≤0.2 μ m.
3. rolling rotor as claimed in claim 2 (piston) formula compressor is characterized in that: described rolling rotor with the gap of the cylinder wall surface of its applying for less than 0.02mm.
4. rolling rotor as claimed in claim 3 (piston) formula compressor is characterized in that: the gap of described valve block and valve block groove is for less than 0.03mm.
5. rolling rotor as described in claim 1 to 4 any one (piston) formula compressor is characterized in that: described rolling rotor and valve block adopt aluminium oxide ceramics compressing.
6. rolling rotor as described in claim 1 to 4 any one (piston) formula compressor is characterized in that: described rolling rotor and valve block adopt silicon carbide ceramics compressing.
7. rolling rotor as described in claim 1 to 4 any one (piston) formula compressor is characterized in that: described rolling rotor and valve block adopt silicon nitride ceramics compressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285860 CN203272135U (en) | 2013-05-23 | 2013-05-23 | Rolling type rotor (piston) type compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285860 CN203272135U (en) | 2013-05-23 | 2013-05-23 | Rolling type rotor (piston) type compressor |
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| CN203272135U true CN203272135U (en) | 2013-11-06 |
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| CN 201320285860 Expired - Fee Related CN203272135U (en) | 2013-05-23 | 2013-05-23 | Rolling type rotor (piston) type compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942297A (en) * | 2015-06-11 | 2015-09-30 | 重庆通赛机电有限公司 | Manufacturing method of electric vehicle motor rotor |
| CN112160906A (en) * | 2020-09-14 | 2021-01-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Friction pair structure, design method and compressor |
-
2013
- 2013-05-23 CN CN 201320285860 patent/CN203272135U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942297A (en) * | 2015-06-11 | 2015-09-30 | 重庆通赛机电有限公司 | Manufacturing method of electric vehicle motor rotor |
| CN112160906A (en) * | 2020-09-14 | 2021-01-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Friction pair structure, design method and compressor |
| CN112160906B (en) * | 2020-09-14 | 2022-08-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Friction pair structure, design method and compressor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20200523 |